drm/i915: don't enable the plane too early in i9xx_crtc_mode_set

This is horrible lore and we should be able to get rid of it now
that the lvds/pfit handling code actually does the right thing.

Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 6e423e0..8b1cfc9 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -4733,8 +4733,6 @@
 
 	i9xx_set_pipeconf(intel_crtc);
 
-	intel_enable_pipe(dev_priv, pipe, false);
-
 	intel_wait_for_vblank(dev, pipe);
 
 	I915_WRITE(DSPCNTR(plane), dspcntr);